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(No Model.)

J. W. BRADSHAW.

PROCESS 0F UNSOLDERING ANDCLBANING TIN SANS. No. 344,561. Patented June 29, 1886.

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JOHN IV. BRADSI-IAV, OF INDIANAPOLIS, INDIANA.

PROCESS OF UNSOLDERING AND CLEANBNG TiN CANS.

J'PBClFICATION forming part; of Letters Patent No. 344,561, dated June 29l 1886o Application filed May S, 1886.

To @ZZ whom it may concern:

Beit known that I, JOI-IN NV. BRADsI-IAW, a resident of Indianapolis, Marion county, Indiana, have made certain new and useful Improvements in Processes for Unsoldering and Cleaning rIin Gans, a description of which is set forth in the following specification, reference being made to the accompanying drawings, in the several iigures of which like letters represent like parts.

My invention consists in a new method of nnsoldering and separating the parts and cleaning the bodies of common tin cans used for putting up fruit, removing all the surplus materials-such as paper and solder-thorou ghl y cleaning the body-sheet ot' which the can is composed, so that it may bemade as available as new tin for other purposes, and will be understood from the following description.

In the drawings I show the mechanism or apparatus by which my process is carried out.

Figure l represents a side view ofthe stove in which the kettle forheating the material is set, and above it, suspended by a rope which passes over a pulley, is the dipper in which the cans are set for immersion in thehot liquid. rIhe dotted line across the kettle near the bottom indicates the false bottom or strainer, which is intended to catch the solder, and which is easily removed when desired. Fig. 2 is a top view ofthe dipper, showing` its sievebottom.

In detail, s is a stove, constructed to receive an iron kettle, 7a, provided with a false bottom, b, fitting the kettle a short distance above the real bottom. This false bottom is made of gauze or wires, and is intended to catch the solder, and be removed when it is necessary to separate the solder. The kettle is partly filled with lard or oil, and a fire being kindled in the stove, the liquid is heated as hot as may be required. It is preferable whileheating the material to place a cover over it, as the oil heats quicker with the cover on than off.

`NVhen the liquid is heated sufiicientl y, the ordi nary empty cans are deposited in the Clipper d, the bottom of which is also constructed of gauze or wires, forming a strainer or sieve, and when iilled the dipper is lowered into the hot liquid so as to completely immerse the Serial No. 201,508. (No model.)

heat alone which melts the solder, but the oil acts in some way as a sort of flux, and operates conjointly with the heat in producing` the desired result. If the oil be heated lto a proper degree, and the cans be submerged for a sufiicicnt length of time, it will be found that when the Clipper is drawn out nearly all the solder has fallen down upon the false bottom ofthe kettle; besides all the labels and dirt of every kind have been removed from the sheet of tin forming the can, and itis left bright and clean, and quite equal, for many uses, to a similarl piece of new sheet-tin. IThe sheets are easily straightened by rolls, and are packed away for use. They are adapted to be cut into a variety of articles-such as collars, thimbles, and other small wares usually made of tin. By these means a double saving is made, inasmuch as the tin procured is almost, if not quite, cqualto new tin, and large quantities of solder are saved during the process, as hereinbefore described.

Any other fatty substance may be used, as well as lard, which is perhaps preferable.

I do not claim as my invention any of the mechanism used in producing the result at which I have arrived; but l XVliat I do claim, and desire -to secure by Letters Iatcnt, is the following:

The process of treating tin cans so as to separate the parts and cleanse the body of the tin and adapt it for other uses, which consists in im mersing the cans in a hot bath ot' oil or other fatty liquid, substantially as described.

In witness whereof I hereunto set my hand this 6th day of May, ISSG.

JOI-IN XV. BRADSI-IAV.

Witnesses:

C. I. Jacons, Harrie MURRY. 

